On Hurd, do not look for functions unimplemented in libc

Last-Update: 2022-02-22
Forwarded: not-needed

The check_function_exists() function of cmake does not keep into account the
defines that glibc provides for the stubs (i.e. unimplemented functions that
always return ENOSYS), so some functions are detected as available.
Unfortunately, due to --fatal-warnings for the linker, linking will fail.
Hence, do not attempt to look for functions that are currently unimplemented
on GNU/Hurd's libc.

Gbp-Pq: Name hurd_disable_unimplemented.diff

diff --git a/src/ioslaves/file/ConfigureChecks.cmake b/src/ioslaves/file/ConfigureChecks.cmake
index db212fc7e70a859c87059a731484fdc1e9124ad8..88dc8a748bdbaf5a4f2f65d23ac67482671b9bc7 100644 (file)
--- a/src/ioslaves/file/ConfigureChecks.cmake
+++ b/src/ioslaves/file/ConfigureChecks.cmake
@@ -13,9 +13,13 @@ check_include_files(sys/xattr.h   HAVE_SYS_XATTR_H)
 # On FreeBSD extattr.h doesn't compile without manually including sys/types.h
 check_include_files("sys/types.h;sys/extattr.h" HAVE_SYS_EXTATTR_H)
 
-check_function_exists(copy_file_range HAVE_COPY_FILE_RANGE)
+if (NOT (CMAKE_SYSTEM_NAME STREQUAL "GNU"))
+    check_function_exists(copy_file_range HAVE_COPY_FILE_RANGE)
+endif()
 
-check_function_exists(posix_fadvise    HAVE_FADVISE)                  # KIO worker
+if (NOT (CMAKE_SYSTEM_NAME STREQUAL "GNU"))
+    check_function_exists(posix_fadvise    HAVE_FADVISE)                  # KIO worker
+endif()
 
 check_struct_has_member("struct dirent" d_type dirent.h HAVE_DIRENT_D_TYPE LANGUAGE CXX)